System development in practice is accompanied by two quality assurance measures for controlling and assessing development results: the review and the test. The form, frequency and scope of these measures must meet the quality and safety demands of the system, and take into account the working methods of the developers, the time available and budget of the project. High‐quality quality assurance has to be closely linked to the actual system development. Up to now this link has only been defined on the level of processes. This article describes a stronger content‐oriented and methodological integration of construction and quality assurance methods. On the basis of the central system development process Requirements Management, well‐known quality assurance processes have been embedded into comprehensive quality management. The result is a method for the generation and execution of an integrated quality assurance plan that runs parallel to and extensively supports the development of safety‐critical systems. The method is strongly focused on the requirements of a system and the ensurance of their implementation. The integrated method has already been successfully applied to real system development projects. The consistent application of quality assurance clearly improves the consistency and completeness of development items and their interfaces and ensures a complete realization of the requirements made of the system.
The complexity of developing automotive control unit software can generally not be mastered without an efficient development methodology. The development discipline activities requirements, modelling / implementation and quality assurance are, for this reason, supported by individual methods. In order to optimally coordinate the methods with one another during their deployment, a structured integration of these individual specialised methods is, however, essential. The following paper, using the model‐based development approach as an example, outlines the content and structure of an integrated methodology that provides such integration. Its use shortens development time and increases product quality by coordinating the deployment of individual methods over the course of the entire developmental process. The main components of this kind of integrated methodology are an interdisciplinary information model, process models with integrated procedures for the realisation of single development activities as well as guidance such as checklists, templates, and examples, among other things. In this paper, we present the experiences that we have gained at DaimlerChrylser Research in developing and applying such an integrated methodology1.
In the automotive field, software development methods and tools are used to cope with the high complexity of automotive software development. However, problems occur with the tracing of information, the assessment and monitoring of the development status, late and thus expensive changes, etc, which lead to increasing development costs and time as well as quality deficits. Our experience with recent projects have shown that the key to solving these problems lies in providing proper answers to the following questions: (1) How can development methods be assembled? (2) How can the use of a variety of development methods be supported by an appropriate tool? To answer these questions, we introduce a tool integration approach that is strongly based on the integration of development methods. The contribution of this paper is (a) a method integration approach that considers finegrained method objects and their specific structure in addition to the usually considered artifacts, (b) an approach to tool integration that overcomes the deficits of heterogeneous tool environments and utilizes the results of the methodical understanding.
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